What a joke !
Google has a curious opinion on what will change and improve the world.
There were different categories and it seems that only one has been retained (social, education).
I’m now convinced that this game was setup by Google to grab ideas for free and take patents and make business.
As an axample, I’ve submitted the Energy meter at the beginning of the game and 4 months later the Google Power meter was published with exactly the same features.
Very sad.